wat is the relationship between JOULE (J) and ERG ??????

experts answer ??:DD

derive an expression for kinetic energy of a body ?

• State the relation between commercial unit of energy and joules .!
  
• How much work is done on a body of mass 1kg whirling on a path of radius 5m ?
• If an object is immersed wholly in a liquid causing upthrust equal to the weight of the body then what will be the relation between the relative densities of liquid and the object ?

When do we say that work is done?

An object of mass of 20 kg is dropped from a height of 4 m.  Fill in the blanks in the following table by computing the potential energy and kinetic energy in each case.

height at which object is located:  4 m, 3 m, 2m, 1m, just above the ground

Potential energy

Kinetic energy

(for simplifying the calculations, take the value of g as 10 m s^-2)

can you plz give me the examples of kinetic energy?????????????

what is the proof for w = F S cos theta

Water is falling on the Blades of a turbine at the rate of 6 * 10^{3 kg per minure .}

The height of the fall is 10 m . Claculate the power given to the turbine. Take g = 10 m/s²

a truck and a car moving with same kinetic energy are stopped by applying same retarding force by means of brakes. which stops at a smaller distance?

define density?Give its SIunit.

a man drops 10kg rock from the top of a 5m ladder. wht is its speed just before it hits the ground? wht is its kinetic energy wen it reaches da ground.

Derive the relation between momentum and kinetic energy ??????

examples of kinetic enery and potential energy its urgent

Water stored in a dam possesses

(a) no energy (b) electrical energy (c) kinetic energy (d) potential energy

Derive an expression for the kinetic energy of an object of mass 'm' moving horizontally with a uniform velocity 'v'